1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *   32bit -> 64bit ioctl wrapper for sequencer API
4 *   Copyright (c) by Takashi Iwai <tiwai@suse.de>
5 */
6
7/* This file included from seq.c */
8
9#include <linux/compat.h>
10#include <linux/slab.h>
11
12struct snd_seq_port_info32 {
13	struct snd_seq_addr addr;	/* client/port numbers */
14	char name[64];			/* port name */
15
16	u32 capability;	/* port capability bits */
17	u32 type;		/* port type bits */
18	s32 midi_channels;		/* channels per MIDI port */
19	s32 midi_voices;		/* voices per MIDI port */
20	s32 synth_voices;		/* voices per SYNTH port */
21
22	s32 read_use;			/* R/O: subscribers for output (from this port) */
23	s32 write_use;			/* R/O: subscribers for input (to this port) */
24
25	u32 kernel;			/* reserved for kernel use (must be NULL) */
26	u32 flags;		/* misc. conditioning */
27	unsigned char time_queue;	/* queue # for timestamping */
28	char reserved[59];		/* for future use */
29};
30
31static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned int cmd,
32					struct snd_seq_port_info32 __user *data32)
33{
34	struct snd_seq_port_info *data __free(kfree) = NULL;
35	int err;
36
37	data = kmalloc(sizeof(*data), GFP_KERNEL);
38	if (!data)
39		return -ENOMEM;
40
41	if (copy_from_user(data, data32, sizeof(*data32)) ||
42	    get_user(data->flags, &data32->flags) ||
43	    get_user(data->time_queue, &data32->time_queue))
44		return -EFAULT;
45	data->kernel = NULL;
46
47	err = snd_seq_kernel_client_ctl(client->number, cmd, data);
48	if (err < 0)
49		return err;
50
51	if (copy_to_user(data32, data, sizeof(*data32)) ||
52	    put_user(data->flags, &data32->flags) ||
53	    put_user(data->time_queue, &data32->time_queue))
54		return -EFAULT;
55
56	return err;
57}
58
59
60
61/*
62 */
63
64enum {
65	SNDRV_SEQ_IOCTL_CREATE_PORT32 = _IOWR('S', 0x20, struct snd_seq_port_info32),
66	SNDRV_SEQ_IOCTL_DELETE_PORT32 = _IOW ('S', 0x21, struct snd_seq_port_info32),
67	SNDRV_SEQ_IOCTL_GET_PORT_INFO32 = _IOWR('S', 0x22, struct snd_seq_port_info32),
68	SNDRV_SEQ_IOCTL_SET_PORT_INFO32 = _IOW ('S', 0x23, struct snd_seq_port_info32),
69	SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32 = _IOWR('S', 0x52, struct snd_seq_port_info32),
70};
71
72static long snd_seq_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg)
73{
74	struct snd_seq_client *client = file->private_data;
75	void __user *argp = compat_ptr(arg);
76
77	if (snd_BUG_ON(!client))
78		return -ENXIO;
79
80	switch (cmd) {
81	case SNDRV_SEQ_IOCTL_PVERSION:
82	case SNDRV_SEQ_IOCTL_USER_PVERSION:
83	case SNDRV_SEQ_IOCTL_CLIENT_ID:
84	case SNDRV_SEQ_IOCTL_SYSTEM_INFO:
85	case SNDRV_SEQ_IOCTL_GET_CLIENT_INFO:
86	case SNDRV_SEQ_IOCTL_SET_CLIENT_INFO:
87	case SNDRV_SEQ_IOCTL_GET_CLIENT_UMP_INFO:
88	case SNDRV_SEQ_IOCTL_SET_CLIENT_UMP_INFO:
89	case SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT:
90	case SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT:
91	case SNDRV_SEQ_IOCTL_CREATE_QUEUE:
92	case SNDRV_SEQ_IOCTL_DELETE_QUEUE:
93	case SNDRV_SEQ_IOCTL_GET_QUEUE_INFO:
94	case SNDRV_SEQ_IOCTL_SET_QUEUE_INFO:
95	case SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE:
96	case SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS:
97	case SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO:
98	case SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO:
99	case SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER:
100	case SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER:
101	case SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT:
102	case SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT:
103	case SNDRV_SEQ_IOCTL_GET_CLIENT_POOL:
104	case SNDRV_SEQ_IOCTL_SET_CLIENT_POOL:
105	case SNDRV_SEQ_IOCTL_REMOVE_EVENTS:
106	case SNDRV_SEQ_IOCTL_QUERY_SUBS:
107	case SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION:
108	case SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT:
109	case SNDRV_SEQ_IOCTL_RUNNING_MODE:
110		return snd_seq_ioctl(file, cmd, arg);
111	case SNDRV_SEQ_IOCTL_CREATE_PORT32:
112		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_CREATE_PORT, argp);
113	case SNDRV_SEQ_IOCTL_DELETE_PORT32:
114		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_DELETE_PORT, argp);
115	case SNDRV_SEQ_IOCTL_GET_PORT_INFO32:
116		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_GET_PORT_INFO, argp);
117	case SNDRV_SEQ_IOCTL_SET_PORT_INFO32:
118		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_SET_PORT_INFO, argp);
119	case SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT32:
120		return snd_seq_call_port_info_ioctl(client, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, argp);
121	}
122	return -ENOIOCTLCMD;
123}
124